Molding apparatus.



N0. 636,48l. Patented Nov. 7, I899.

'F. ANDREAS.

MOLDING APPARATUS.

(Application filed m -10, 1899.)

. (No Model.)

UNITED STATES PATENT OEEIcE.

FREDRICK ANDREAS, OF ST. LOUIS, MISSOURI.

MOLDING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 636,481, dated November7, 1899. Application filed July 10, 1899- serial No- 723,509. (N0model.)

To aZZ whom it may concern.-

Be it known that I, FREDRICK ANDREAS, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Molding Apparatus, of which thefollowing is a full, clear, and exact description, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which Figure 1 is a sectional view of my improvedapparatus, showing the manner in which the same is used in the sand.Fig. 2 is a similar view showing the manner in which the major,

Fig. 3 is a part of the pattern is withdrawn. detail view showing a partof the molding apparatus collapsed. Fig. 4 is a detail view of aresultant mold-matrix, and Fig. 5 is a detail view of part of themolding apparatus in perspective.

This invention relates to a new and useful improvement in moldingapparatus, the object being to construct an apparatus of the characterdescribed to be used particularly in connection with stove-patterns formolding the keeper projections thereon, which projections are formedwith shoulders to cooperate with the latches on the doors or othermovable parts of the stove. Heretofore these keepers have been formed byattaching to the pattern before the mold is made a separate sheetmetalpocket of the desired shape, which pocket was left in the mold after thepattern was withdrawn, and the molten metal when introduced flowed intothe pocket and filled the same, so that when the casting was removedthis sheet-metal pocket formed an outer section or shell on theprojection.

My invention consists in the employment of a movable or collapsiblesection in the pattern which when in its outer position will form theshoulder. of the keeper projection and which when retracted will be outof the path of the sand in order that the pattern may be evenly drawn.

In the drawings, A indicates part of a pattern used for the purpose ofillustrating my invention, on which is formed a projection a.

B indicates a removable casing or shell which is of the shape of thebody portion of the keeper projection, said casing having pivoted orotherwise movablysecured therein a tongue or folding piece 0, which ispreferably formed with a projection a, received in an opening a'in thebody of the pattern, as shown in Fig. 1. This tongue or shoulderprojection 0 when the pattern is introduced into the sand is in itsoutward position, as shown in Fig. 1. When the pattern is drawn from thesand, the shell B is left therein, as shown in Fig. 2, after which thefolding shouldered tongue 0 is turned inwardly, as shown in Fig. 3, andremoved by grasping the projection o, leaving a matrix of the form shownin Fig. 4. It is obvious that while I have shown a separate shell as asupport for the folding shouldered tongue, said tongue can be mounted ina recess in the projection a on the pattern, so as to become part of theoriginal pattern.

. Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination with a pattern having a projection, of a shell orcasing removably secured to said projection,and apivotedshouldered'tongue in said shell or casing which is held inits outerposition by said projection.

2. The combination with a pattern formed with a projection, of a shellor casing removably secured to said projection, a shouldered tonguepivoted in said shell and held in its outer position by said projection,and an upward extension or handle on said tongue which projects througha suitable opening in the pattern and, in'the absence of the pattern,affords a grasping projection extending above the face of the mold,whereby the tongue may be moved inwardly and, with its shell, withdrawnfrom the sand; substantially as dc scribed.

In testimony whereof I hereunto affix my signature, in the presence oftwo witnesses, this 5th day of July, 1899.

FREDRICK ANDREAS.

